just lifted the front with a 3 inch leveling kiy by supreme suspension. now i need to get the rear up a little bit and i am not sure which direction to go.lift blocks just seem to me to be a disaster waiting to happen and on the other hand will a helper spring raise it up enough? I do haul heavy stuff on occasion so id like to knock out two birds with one stone and maximize my payload as much as possible. Any ideas , opinions?

It sounds like add-a-leafs would suit your situation. Plenty of off-roaders use lift blocks. We just keep them small because of axle wrap. Street truck with huge lifts that want to look cool have 4"+ blocks because that is the cheapest way to lift a truck.

I had a 2" leveling kit and 1.5" helper springs. Gave it a little rake back. Hopefully your not a 4x4 running a 3" leveling kit. Disaster waiting to happen.

+1. Anything more than 2" kit on the front seems to cause issues with the front end suspension (parts wear out and/or break really fast).

I've got a 2.5" front lift (2wd). I originally had 1.5" cast iron blocks that cracked in less than 8 months. I removed the blocks and put in an add-a-leaf. It gave me a little over an inch after settling. In my case, blocks were a total waste of time and $$. I say go with the add-a-leaf.

If you want extra load carrying capacity, go with an add-a-leaf. But the add-a-leaf will make your truck ride quite a bit stiffer when it's empty. Whether or not that's objectionable is up to you.